Refrigerating apparatus



Oct. 5, 1943. 1.. A. PHILIPP REFRIGERATING APPARATUS Original Filed Aug. 23, 1940 F .1 g; J6 v a INVENTOR. Lamps/1c: If. P/(lL/PP BY WLM IYTFWPIZEY Patented Oct. 5, 1943 2,330,915 REFBIGERATING APPARATUS Lawrence A. Philipp, Detroit, Mich assignor to Nash-Kelvinator Corporation, Detroit, Mich, a corporation of Maryland Original application August 23, 1940, Serial No. 353,924. Divided and this application July 18, 1941, Serial No. 403,027

2 Claims. (Cl. 62-125) This invention relates to refrigerating apparatus, and more particularly to household refrigerators.

The present application is a division of my copending application Serial No. 353,924, filed 5 small diameter tube 66 is the sole control ior August 23, 1940; for Refrigerating apparatus. the flow ofliquid refrigerant to the evaporating Another object 01' my invention is to provide portion 4 The evaporating p n 48 18 a primary system including tw spaced apart cured to plate 10 which is clamped to a plate 14 refrigerant evaporators separated by a pressure to which the secondary condensing element 56 differential device, and to utilize one of the said 10 is Secured Thus the Plate a Pl e 14 r evaporators for condensing evaporated refriger- Provided to bring the pr y refrigerating Y t i a secondary refrigerating system tern into heat exchange relationship with the I Further objects and advantages of the present Condenser 0f the Secondary SYStem d invention will b apparent from t follo i densing evaporated refrigerant m the secondary description refren e being had t t aeeom- 15 system. After the refrigerant leaves the evappanying drawing wherein a preferred form of crating portion 48 it passes to the evaporating t present invention is clearly shown element 40 through a fixed restriction 80. The In t drawing: iixed restriction maintains a pressure differenp 1 is a fragm tary View my improved tial between the evaporating portion 48 and the refri erat r showmg particularly an ice making evaporat ng element 40 so as to maintain ahigher primary evaporating element and a heat pressurem the element 48. The condensing unit change connection between primary and second- 44 functions in the well known m ary t Although only a preferred form of the inven- 2 1s a front View of the element shown P t1on has been illustrated, and that form described in Fig. 1; and in detail, it will be apparent to those skilled in Fig. 3 is a diagrammatic view of a refrigerating the that. various mPdifications may made system used for refrigerating the cabinet shown Without departmg from spirit the in Fig 1 inventmn or from the scope of the appended Referring to the drawing, there is shown a 3 claimscabinet, designated in general by the numeral 20. I The cabinet includes an inner metallic liner 22 Refngeratmg apparatus compnsmg P which defines a food storage compartment, desrefrigerating system including two refrigignated by t numeral The food compart erant evaporators connected in series relationt 24 is r fri r t d by a primary f ig r ti 85 Ship, means connected in the system between said system aided by a secondary refrigerating two evaporators for ma ntaining the first one of system 3; said evaporators to receive refrigerant at a higher h primary refri er ti system 30 includes temperature than the other, and a secondary rean ice making evaporating element 4 located frigerating system includingan evaporator and i th food Storage compartment 24 a condensing 4" a condenser associated with said higher temperaunit 44, and a relatively high temperature evaptum PP crating element 48. The evaporating element Remgemtmg apparatus comprising a P 40 per is of t type Shown and described in mary refrigerating system including two refrigd tail i my copendmg application serial erant evaporators connected in series relation- 353,924, filed August 23, 1940, for Refrigerating i means connected in the system between apparatus, of which t present application is a said two evaporators for maintaining a pressure division. The secondary refrigerating system 3 dlfierentlal between said evaporators and a secincludes a'secondary condensing element 56 se- Ondary refrigerating System including an evapcured t th Outside of t inner li r and a orator and a condenser associated with the first secondary evaporating element 00 which is preione of the evammtors of the Primary system erably attached to the rear wall of the inner liner and extends downwardly to the bottom wall of said liner in the manner shown and described in the above mentioned application.

In accordance with my invention, liquid refrigerant is delivered from condensing element 44 through a liquid supply or small diameter tube 66 to the refrigerant evaporating portion 48. The

to receive refrigerant.

LAWRENCE A. PHILIPP. 

